9u-15=7u-1

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Solution for 9u-15=7u-1 equation:


Simplifying
9u + -15 = 7u + -1

Reorder the terms:
-15 + 9u = 7u + -1

Reorder the terms:
-15 + 9u = -1 + 7u

Solving
-15 + 9u = -1 + 7u

Solving for variable 'u'.

Move all terms containing u to the left, all other terms to the right.

Add '-7u' to each side of the equation.
-15 + 9u + -7u = -1 + 7u + -7u

Combine like terms: 9u + -7u = 2u
-15 + 2u = -1 + 7u + -7u

Combine like terms: 7u + -7u = 0
-15 + 2u = -1 + 0
-15 + 2u = -1

Add '15' to each side of the equation.
-15 + 15 + 2u = -1 + 15

Combine like terms: -15 + 15 = 0
0 + 2u = -1 + 15
2u = -1 + 15

Combine like terms: -1 + 15 = 14
2u = 14

Divide each side by '2'.
u = 7

Simplifying
u = 7

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